<?php
header("content-type:text/html;charset=utf-8");

class Car {
	private $carMode;
	private $carBand;
	private $weight;
	private $speed;


	function Car($m,$b,$w,$s){
		$this->carMode = $m;
		$this->carBand = $b;
		$this->weight = $w;
		$this->speed = $s;
	}
	function getWeight(){
		return $this->weight;
	}
	function getSpeed(){
		return $this->speed;
	}
		}


$car1 = new Car("捷达","大众",1.5,160);
print_r($car1);
echo "<br/>";
echo $car1->getSpeed();
echo $car1->getWeight();

class BMWCar extends Car {}
$bmw1 = new BMWCar("宝马","大众",2,200);
echo "<pre>";
print_r($bmw1);
echo $bmw1->getSpeed();
